id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
hjic-214	Fazekas, B.; Pitás, V.; Thury, P.; Kárpáti, Á.	Examination of the Use of Support Materials of Natural Origin in Wastewater Treatment	2009	4	.pdf	application/pdf	2758	172	41	As it can be seen on the figure, the ammonium removal capacity of the biofilter made of zeolite grains was about twice as the control reactors. It might be due to the ammonium fixation of the zeolite or an advantageous surrounding for activity of the nitrifiers on the surface of zeolite grains.	cache/hjic-214.pdf	txt/hjic-214.txt